hydroxyl (structure and macromolecules found in)

phosphate (structure and macromolecules found in)

* Functional group: one P double-bonded to one O and single-bonded to 3 more O in tetrahedryl(?) shape, on end of molecule* Found in: nucleic acids

11

sulfhydryl (structure and macromolecules found in)

* Functional group: one S single-bonded to one H, on end of molecule* Found in: proteins

12

amino acid

* Monomer that composes the polymers that are proteins.* There are 20 different kinds.* Joined by peptide bonds (covalent)* Structure: a central C bonded to one amino group, one carboxyl group, one H, and an R group (which determines the unique character of the 20 different amino acids).